Jump to content

Converted to E85

bobbobtar

By bobbobtar
in Modifications & Accessories

 Share

Recommended Posts

Carl T Enthusiast

Carl T

Posted
Posted

Do not put E85 in a stock non E85 truck. They do not have the ability to recognize or perform self checks on the sensor. You will likely set 171/174 codes.

 

As for the hoses it is a great way to do it. We install and sell our kits because they are quicker to install and work on all vehicles.

  • Like 2
  • Replies 84
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

bobbobtar
bobbobtar

Just converted my 2016 Chevy Silverado LTZ 5.3L Double Cab to run E85 same as my 2014 GMC Sierra 5.3L. The Chevy did not come from the factory as a flex fuel, but the GMC did, these are the GM parts I

bobbobtar
bobbobtar

Seat of the pants, I could tell it was different, felt like it had better acceleration.

transam69230
transam69230

I would completely advise against running e85 in your truck until you get the ECU tuned.

Posted Images

Carl T Enthusiast

Carl T

Posted
Posted (edited)

So if the truck is a "flex fuel truck" then why didn't it have the sensor already? That indicates that it is not setup for flex fuel in my opinion.

 

If your tech is a GM service technician I would take that with a grain of salt and do your own homework on it.

 

You could certainly be right, but it I'd verify that with a tuner that uses an aftermarket tool such as HP tuners.

 

They don't install sensors in the trucks because they cost millions for ppl that do not use them. My guess is they made them standard on 14 5.3'some to show off the gains and then made them optional.

Edited by Carl T
  • Like 1
bobbobtar Enthusiast

bobbobtar

Posted
  • Author
Posted

Do not put E85 in a stock non E85 truck. They do not have the ability to recognize or perform self checks on the sensor. You will likely set 171/174 codes.

 

As for the hoses it is a great way to do it. We install and sell our kits because they are quicker to install and work on all vehicles.

Ran two tanks of E85 thru the truck before I got around to installing the hoses and sensor and did not throw any codes. Carl my independent GM tech. could not find a way to flash my 2016 truck(nothing in the ECM) have you done any new trucks yet, my theory is once a sensor gets plug in the computer sees it. Just like when you plug a printer into your desktop.

transam69230 Enthusiast

transam69230

Posted
Posted

You need someone with hptuners or efilive. I suggest pulling the computer out and mailing it to Cjtunes.com aka Carl T or finding a local competent tuner in your area.

 

They will be able to flash your computer for the fuel composition sensor you installed and it will function correctly.

  • Like 1
Scooter Scott Enthusiast

Scooter Scott

Posted
Posted

You need someone with hptuners or efilive. I suggest pulling the computer out and mailing it to Cjtunes.com aka Carl T or finding a local competent tuner in your area.

 

They will be able to flash your computer for the fuel composition sensor you installed and it will function correctly.

 

I don't see how if a GM tech can't program it in the ECU how hptuners or EFI live can.

Rawyzf Senior Enthusiast

Rawyzf

Posted
Posted

Ran two tanks of E85 thru the truck before I got around to installing the hoses and sensor and did not throw any codes. Carl my independent GM tech. could not find a way to flash my 2016 truck(nothing in the ECM) have you done any new trucks yet, my theory is once a sensor gets plug in the computer sees it. Just like when you plug a printer into your desktop.

Plugging a $100 printer into a $500 Laptop vs $50 sensor into a $45000 truck is a bit different.

 

I hope your tech knows what he's doing. 50% of the ones I've dealt with didn't seem to know much more than your typical printer repair man.

 

Sent from Tapatalk App - Samsung S6

  • Like 1
bobbobtar Enthusiast

bobbobtar

Posted
  • Author
Posted

The point being is that the computer recognized the sensor and did not have to be flashed.

Rawyzf Senior Enthusiast

Rawyzf

Posted
Posted

The point being is that the computer recognized the sensor and did not have to be flashed.

I don't think that's the case.

 

You said you ran 2 tanks of e85 before you even installed the sensor.

 

Your truck may run with E85, but I'm guessing timing etc is not where it should be.

 

Sent from Tapatalk App - Samsung S6

SouthernSilveradoGuy85 Senior Enthusiast

SouthernSilveradoGuy85

Posted
Posted

I thought flex fuel engines required different fuel injectors that can spray at a higher PSI. If so then I guess they just put the E85 spec injectors in all of them, at least all of the 4.3s and 5.3s.

Carl T Enthusiast

Carl T

Posted
Posted

The point being is that the computer recognized the sensor and did not have to be flashed.

 

Incorrect, the ECU sees a frequency output from the sensor but does nothing with it. Think of it a an employee yelling feedback to a deaf manager, not going to help. The 16 tune files have a stoich of 14.11:1 across the board for the AFR vs alcohol % so even if it could tell the % it would not alter the commanded AFR's.

 

If your dealer tech knew what he was doing he could flash a stock flex file into your truck and ENABLE the fuel composition sensor. Without some sort of programming you are doing more harm than good.

I thought flex fuel engines required different fuel injectors that can spray at a higher PSI. If so then I guess they just put the E85 spec injectors in all of them, at least all of the 4.3s and 5.3s.

Flex or no flex they all received the same fuel system.

  • Like 1
bobbobtar Enthusiast

bobbobtar

Posted
  • Author
Posted

Carl, not dealer tech, BBP is doing that as we speak.

Carl T Enthusiast

Carl T

Posted
Posted

Carl, not dealer tech, BBP is doing that as we speak.

I assumed if you were working with a tech that would advise running a flex fuel sensor without a tune it was a dealer tech. I am sure they will take good care of you.

  • 2 years later...
RDKILL Enthusiast

RDKILL

Posted
Posted

I know this thread is 2yrs old, but I was searching E85 conversions to see what others have done.

I was just thinking of changing my fuel injectors to 750's and have BBP send me a tune for it, and was looking to see if anyone else has done this.

I guess as of 2yrs ago, no one has...LOL!

 

I currently run a 50/50 E85/93oct and have no issues other than a quicker response and pick up.

I have been running this mixture for over a year now and had it tuned with BBP to run the 50/50 mixture, I haven't done anything else as far as fuel management goes. Same fuel lines/pump and no sensor.

My truck is a '16 RCSB and is NOT a factory Flex Fuel truck, so it's not like it can't be done, but a tune is a definite at minimum like what I did in order to make it work.

I hope this helps...
 

  • Like 1
Nasty Senior Enthusiast

Nasty

Posted
Posted
56 minutes ago, RDKILL said:

I know this thread is 2yrs old, but I was searching E85 conversions to see what others have done.

I was just thinking of changing my fuel injectors to 750's and have BBP send me a tune for it, and was looking to see if anyone else has done this.

I guess as of 2yrs ago, no one has...LOL!

 

I currently run a 50/50 E85/93oct and have no issues other than a quicker response and pick up.

I have been running this mixture for over a year now and had it tuned with BBP to run the 50/50 mixture, I haven't done anything else as far as fuel management goes. Same fuel lines/pump and no sensor.

My truck is a '16 RCSB and is NOT a factory Flex Fuel truck, so it's not like it can't be done, but a tune is a definite at minimum like what I did in order to make it work.

I hope this helps...
 

Your truck didnt have e85 at first and you just added injectors?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,894
    Total Members
    8,960
    Most Online
    TopBo
    Newest Member
    TopBo
    Joined

  • Who's Online   4 Members, 0 Anonymous, 1,173 Guests (See full list)

  • Latest Articles

  • Posts

    • Coastie05
      It's Been a Long Time...

      By Coastie05 · Posted

      Welcome back!
    • davester
      New to Me 2010 SLE (Quirks, Issues)

      By davester · Posted

      not all plugs will be used.  gm uses more generic harnesses that support most/all options, and if your truck doesn't have a specfiic option, the plug won't be used (commonly will have a dummy insert in the plug , or it'll be taped up, but some may just be left as is).  But it's sldo possible some p.o. has installed the wrong/cheaper parts that aren't correct for your vehicle...
    • fm2176
      New to Me 2010 SLE (Quirks, Issues)

      By fm2176 · Posted

      First off, I'm not trying to just get easy advice/fixes for the issues I've noticed so far.  I'll be combing through the site via searches and such, and if past experiences are any indication, should find what I need.  For the sake of conversation, though, I figured I'd post the handful of things I've noticed in the 12 hours since buying my 2010 SLE CCSB.     Indicator lights: Airbag and TPMS.  The tire pressures aren't reading for any of the wheels, so I'm pretty certain the sensors were either removed, are damaged, or are otherwise inoperable.  I used to mount and balance tires 25 years ago but am pretty much ignorant when it comes to TPMS.  My 2006 didn't have the sensors and this might be the fourth vehicle I've owned that does.     Radio: Rear speakers aren't working.  I removed the driver's side rear door panel and checked the speaker and wiring.  I also removed the sill and b-pillar covers to check the wiring.  A few minutes of Google Fu showed that this is potentially a head unit issue.    Switches: Power mirrors don't turn left/right.  I ordered replacement driver's door switches that should arrive tomorrow.  The windows and locks work but it was only about $20 for all of them.  The driver's side rear window switch lets the window down but won't put it back up.  I think the passenger rear doesn't work at all.  In the coming days/weeks, I'll break out my multimeter to check all of that.   Unknown wiring harness: There's a box attached to the front driver's side of the engine compartment, right where the second battery shelf is located.  There are three plugs, one of which looks like it fits a standard headlight-style bulb (9007 or similar).  It doesn't look like it's plugged into anything.  I'll do some digging and if I don't see anything elsewhere on the site, post some pictures here.   Unknown plugs on brake booster: There are at least two female plugs on the brake booster that aren't being used.  I think it might be a replacement/aftermarket, so maybe those are used for a different application, as there don't seem to be any unplugged harnesses and no indicator lights are on.   Little squeaks when turning: Sounds almost like a bushing around the bed of the truck.  I'll have to pay close attention as I get more familiar with the truck.   Clunk on acceleration: possibly the infamous drivetrain clunk.  My 2006 had it and I'm just not familiar enough with this truck yet to fully grasp what it is.   Anyway, my apologies for the vague and all over the place post.  This truck is new to me, and it's been four years since I drove my 2006.  With 200k miles, I know I'll need to learn this truck quickly to avoid having any major issues, despite being confident it's got much more life to it.  My 2006 had nearly 320k on it when I parked it (nearly 300k of which I put on the truck), and it was still drivable then, though I suspected the head gasket might have blown.  I'd hoped to have that truck back by now, but it's gone forever, as I detailed in my reintroduction thread.  
    • lowrider
      Range RA007 DFM Module

      By lowrider · Posted

      I always drive in Sport mode. With more driving, I am finding the initial response when accelerating is much quicker now🖕 Lou
    • Tyler Gibbs
      2022 2500HD with a new RSI SmartCap

      By Tyler Gibbs · Posted

      Is it an optical illusion in the pic or is the truck really squatting that much horribly?

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...